Wrench



c E. REED.

WRENCH. 4 APPLICATION FILED IULYZQ. I920.

1,41 2,260.v Patented Apr. 11, 1922.

Inventor OYYLEMS I I d CLARENCE E. EED, on Irons/Ion, T XAS.

WRENC Paras-r EE E T 0 all whom it may concern: 1

Beit known ,thatI, CLARENCE E..Rnnn,. a

citizen. of the United States, and resident of Houston, Texas, have invented certain new and useful'lmprovements in Wrenches, of which the following is a specification.

The invention relates to pipe wrenches and while particularly designed todo heavy work, such-as in connection with the drill stems of deep well drilling apparatus, it will be understood that the wrench is susceptible of being built of, such a size and form as to adapt it tolighter work. Q 7 The invention consists in the features andcombination and arrangement of partslhere inafter described. and particularly pointed out in the appended claims. j a

i In the drawings; Figure. 1 is a view ofthe pipe wrench with the head portion thereof partly in section; a i

Figure 2-cis a sectional view taken length;

from Figure'l. v

Figure 3 is a-perspective view of one. of the gripping dogs belonging to the head of the wrench.

wise of the wrench and at: arquarter turn r In these drawingsl indicatesthe head in the form ot a' yokehaving theitwo jaws 2, j 2. This head in the present embodiment of the invention is shown as formedof one piece with its j aws integral with each other. The head is provided with a groove 3 1nits face, the inner margins of this groove hav ingoverhanging. flanges indicated at l.

Within this groove blocks 5 are fixed, these being in the form of Wedges and they are retained inlplace by pinsGLQThe wedge lilocks serv'e to guide gripper devices 7- which:

. are provided, each withsan inclined face 8' and gripping point 9. These grippers hear one upon another throughout the; series and thereisa series of these devices arranged in each jaw. They are held-from dropping out bypins 9ytaking under the overhanging flanges. v

A masterwedge 10 is arranged centrally of the head of the wrench and this master wedge bears upon the first gripper device or gripper dog of each series, so that when this master wedge is thrust forwardly it will impart'amovement to. eachseries of gripping. devices and cause the members of each series to slide up. the incline of its guiding wedge 1920; Serial Ito/399,782. v

or tooth 9jso asto grip-the pipe for turning the same. L Y

Specification ofLetters Patenti p te td-Ap 11,1922, 5 Application filed July 29, i

The, movement-imparted by the master 7 wedge tothe first grippingdevice ordog is, I

transmitted to; the second. gripping device and soon throughoutth i The master, wedge. is operat edlby the portion '11 of a, handle l2 which is pivoted to. the-head orfyolge'rby a, pin 13 passing I through .the flanges,- or ears 14 of thehead of thewrenchs-Q."

to thehead oft-lie wrench islimite'dQ ,It'will be observed that by eXer-ting pres-Q f sure upon the handle in the proper direction the master wedge will be advanced and thusset the gripping devices in position'torfirmly V i grip the pipe to be turned; 7

The wrench 'inay be usedeither leftdiand V.

orright-hand its position whenused' as a left-hand wrench beingreverlsed tromfits, p0;

sition when used; as a 'rightzh nd wrench. It will 'also be seen thatQthe handle is ranged centrally; in; respect to the 'jhe'a d and lengthwise axis" for; the wrench, V The LpIain upper end ,of;the handlehasa carn'a'ction onthe stem of the master wedge,which stein projects into; the space between the ears (14 of the wrenchflhead;

The master wedgeis guidedin a'recess formed at} the jun'ction o1 ,'the two"'j aws: of i the Wrench. Q i

ofis set s asto' embrace-the pipeiand then by swinging; the handle i in the direction necessary teturn" th'epipfe Qrptheijiobject, i

the I first effect will be to operate the master wedge by the pressure exerted .ffloin head ofthe handle, and the series-of wed e;

shaped gripper dogs thus I will he; set against the pipe and-further movement of'theh an vdle in the same direction will resultin ing the pipe.

While I have shown one form of wrench I embodying the'inventioml desire it understood that this isillustratijve-of the general principles involved and is not to be regarded as restrictive upon the scopepfth no elty of the invention,- this being defined Eloy 'th The head rtionf or the .piv 'e h le -"l th s le o h appl ancethezh adithere ing the operation of the master member to set the gripping means into engagement with the object, Sl1bStt11t1all)"2tSLICSOll-bGCl.

2. A wrench comprising a jaw, gripping devices carried thereby and individually movable substantially radially of the jaw, an opposing jaw, a master member for operating the gripping means, and a handle for turning the wrench, and by the same movement performed for turning the wrench, etfecting the operation of the master member to set the gripping means into engagement with the object, substantially as described.

3. A wrench comprising a jaw, grips carried thereby movably, a series of fixed inclines along which the grips move to be thereby projected inwardly to engage the object, a master member and means for operating the master member for operating the grips, said grips bearing one upon another whereby the movementof the master member is transmitted from one grip to the next adjacent grip, substantially as described.

4, In combination in a wrench, a jaw having a channeled face with overhanging flanges, a series of grips with portions en gaging under said flanges and held against loss thereby, a series of fixed inclines in the channel and upon which the grips work to be projected inwardly to engage the object,

' an opposing jaw, a master wedge and means for operating the master wedge to set the seriesof grips against the object, substantially as described. 7

5. In combination in a wrench, a jaw with gripping means movably mounted thereon, an opposing jaw, a master member slidable radially of the jaw for operating the gripping means, a handle pivotally mounted and controlling by its pivotal movement the operation of the master member, said handle being the means for turning the wrench, substantiallyas described.

V 6. In combination in a wrench a head hav-' ing a jaw with gripping means movablymounted thereon, an opposing jaw, a master member guided in the head for operating the gripping means, a handle pivotally connected with the head and having a portion in engagement with a part of the master memher, said handle serving to operate the masster member when pressure is applied to said handle to turn the wrench, substantially as described.

7. In combination in a wrench, a jaw, gripping means mounted thereon, an opposing jaw, a master member for operating the gripping means, and a handle pivoted to one side of the point where the jaws join each other and having a portion extending laterally from the pivot to engage and operate the master member when the handle is pressed upon and swung for turning the wrench, substantially as described.

8. In combination in a wrench, a head having a jaw, gripping means mounted on the jaw, an opposing jaw, rigid with the jaw first mentioned, a master member on the head, a handle pivoted on the head and having a portion for'operating the master memher, in the same movement thereof which is performed for operating the wrench.

9. In combination in a wrench, a head, a pair of rigid jaws in the head, gripper means movable in relation to the jaws. a master wedge member arranged'at the junction of the jaws, a handle extending with its center coinciding with the center line between the jaws, and with the line of movement of the master wedge member, said handle being pivotally mounted at a point to one side of the said center line and having a por tion engaging a part'of the master wedge member, substantially as described.

10. A wrench comprising a head having a pair of rigid jaws, gripping means, a'master member arranged at the junction of the jaws for operating the gripping means,'a socket in which said master'member operates, a stem on said master member, and ahandle pivoted to one side of the center line passing between the jaws and having a portion to bear on said stem for operating the master member, substantially as described.

11. A wrench comprising a head having a pair of jaws, and having gripping means and a master member for operating them, a handle pivoted to the head for operating the master member in the same movement which is given the handle to turn the wrench. and means for limiting the movement of the handle relative to the head, substantially as described. V 7

12. A wrench comprising a head having a pair of jaws, and having gripping means and a master member for operating them, a handle pivoted'to the head for operating the master member in the same movement which is given the handle to turn the wrench, and means for limiting the movement of the handle relative to the head, said means consist ing ofa pin and slot connection between the handle and the head of the wrench, substan tially as described.

13. A wrench having a head with a pair of rigid jawsand with ears extending from the back of the head and centrally thereof, gripping means movably carried by the jaws, a master wedge arranged at the junction of the jaws, and movable towards. and from the center of the space between the jaws, a recess in the head at the junction of the jaws in which the master wedge is guided, a stem on the wedge member projecting into the space between the ears, a

handle extending in a general direction in I line with the center of the jaws, and pivoted between the cars off to one side of said center line, and having a portion extending to one side of its pivot for operating the wedge, substantially as described.

14. A wrench having a head with a pair.

of rigid jaws and with ears extending from the back of the head and centrally thereof, gripping means movably carried by the jaws, a master wedge arranged at the junction of the jaws, and movable towards and from the center of the space between the jaws, a recess in the head at the junction of wedge, and means for limiting the movement of'the handle consisting of a pin and slot, substantially as described.

15 In combination in a wrench, a head having a jaw with gripping means movably mounted thereon, a master member on the head for operating the gripping means, a

handle pivoted to the head and operating the said master member when the handle is moved to turn the wrench, said wrench being .35

reversible for operating right-hand or lefthand, substantially as described.

16. In combination in a wrench, a head having rigid jaws, gripping means movably mounted in each jaw, a master wedge at the 4.0

center of the jaws, and a pivoted handle, the operation of which operates the master wedge to operate the gripsand by the movement of the handle in the direction for turning the wrench with the thereby.

CLARENCE E. REED.

object gripped In testimony whereof, I' aflix my signa-- tureQ i 

